Resistance device capable linearly adjusting training load

ABSTRACT

A resistance device capable linearly adjusting training load comprising: a rack unit with two vertical rods, and two sliding units, which are connected to a handle and a pedal; a linkage unit with a chain and a belt, and are locked on the connecting plate; and two damping units make multiple magnet pieces arranged on both sides of a fixing base, and a diamagnetic metal piece is arranged on the connecting plate, and set trough the fixing base to cut the magnetic circuit generated by the magnet pieces to form damping: When the user steps on the pedal, the connecting plate will drive the metal sheet to cut the magnetic circuit, and the damping can be changed to further achieve the effect of linearly adjusting the training load.

BACKGROUND OF THE INVENTION 1. Field of the Invention

The invention relates to a fitness equipment, especially to one that has a resistance device capable linearly adjusting training load that having resistance mechanism on the connecting plate which slide up and down relatively, so as to achieve adjust the training load by changing the area of the magnetic circuit.

2. Description of the Related Art

Economic prosperity drives the improvement of living standards, and the pursuit of a healthy body has become the first priority in a wealthy life. Although outdoor exercise can strengthen the body, it cannot be performed anytime and anywhere. Since fitness equipment is not restricted by place and weather, using fitness equipment to maintain exercise habits has become the best choice for today's working group.

Fitness equipment mostly trains different limbs of the human body. Rock climbing and mountaineering are loved by many outdoor activities, so rock climbing machines or climbing mountaineering machines came into being. An example of a conventional rock climbing machine is shown in FIG. 1A, wherein the resistance unit 911 of the mechanism has a drive cable 913 connected to a pedal 912, and a flywheel 914 twined and driven by the drive cable 913; The user holds the grip 915 with both hands and steps on the pedals 912 with both feet to move up and down alternately to simulate a rock climbing action. At the same time, the resistance unit 911 provides movement resistance to achieve the effect of exercise. However, it is found that the flywheel 914 must have enough weight to form movement resistance, and the flywheel 914 also lacks a mechanism for adjusting the resistance; obviously, the flywheel 914 is not a suitable resistance mechanism in a rock climbing machine.

Another example of a rock climbing machine is shown in FIG. 1B. The resistance unit in the mechanism includes a friction member 811, a rotating member 813 corresponding to the friction member 811 and capable of rotating with a rotation axis L as the axis and for the linkage member 812 to surround, a brake member 814 disposed on the rotating member 813 and adjacent to the friction member 811, a limiting member 815 adjacent to the rotating member 813 and an pressing member 816 that penetrates the rotating member 813 along the rotation axis L and is used to provide the brake member 814 to press against the friction member 811. It can be seen from the figure that the resistance of the mechanism is produced by the stress of the brake member 814 pressing against the friction member 811. Since the resistance is proportional to the stress, the greater the stress, the greater the stress between the brake member 814 and the friction member 811, and the greater the abrasion, the brake member 814 and the friction member 811 will inevitably wear out. Moreover, rotating the pressing member 816 can change the resistance, but there is no linear relationship between the pressing member 816 and the brake member 814. Therefore, the user will not be able to control the resistance in the required precise range according to the physical fitness.

SUMMARY OF THE INVENTION

It is a primary objective of the present invention to provide a damping unit with simple mechanism and no wear and tear problem, and the damping unit is used in a resistance device, which will have the functions of linear adjustment of the training load and convenient operation and control.

In order to achieve the above objectives, the present invention including: a rack unit having a base frame, a support frame, and two vertical rods, the vertical rods are individually a hollow tube, and stand parallelly on the base frame, and are supported by the support frame; two sliding units, each having a linear rail, fixed on the inner edge of the vertical rods, an upper sliding seat and a lower sliding seat assembled on the two ends of a connecting plate, and are placed on the linear rail and making it to be slidable up and down, a handle and a pedal are assembled on the upper and lower seats respectively; a linkage unit, which has a sprocket and a pulley, which are arranged separately up and down and between the two vertical rods, a chain and a belt are respectively arranged around the sprocket and the pulley, and the two end of each of them are connected by a connecting unit and further locked on the connecting plate of the two sliding units, so that the components of the two sliding units can slide up and down relative to each other; and two damping units, having multiple powerful magnet pieces assembled on both sides of the concave part of a U-shaped fixing seat, and the magnet pieces of the two adjacent ones and the opposite ones have different magnetic poles, then the fixing seat is pivoted on the surface of the vertical rod by an adjusting device, a metal sheet which is diamagnetic, is assembled on the connecting plate and penetrates between the concave part of the fixing seat for cutting the magnetic circuit generated by the multiple powerful magnet pieces to form damping, so operating the adjusting device can make the fixing seat laterally displaced to change the area of the metal sheet, thereby changing the damping.

The user holds the handle with both hands, and steps on the pedals to move up and down alternately to simulate rock climbing or mountain climbing, then the linkage unit will drive the connecting plates of the two sliding units to drive the handles and pedals on both sides, so the two vertical rods have up and down relative sliding; at the same time, the user can use the damping unit to operate the adjustment device according to the physical fitness, and the fixing seat will be displaced laterally, because the connecting plate drives the diamagnetic metal sheet to cut the magnetic circuit generated by the powerful magnet pieces back and forth. At the same time, the displacement of the fixed seat makes the area of the cutting magnetic circuit change linearly, so that the change of the damping also change linearly, so operating the damping unit can change the magnetic resistance to further achieve the effect of linearly adjusting the training load.

Also, the metal sheet of the present invention is made of copper or aluminum material.

Also, the inner edge of the vertical rod has multiple guiding blocks, which are provided with guiding grooves to make the connecting plate set through, and make the connecting plate is guided by the guiding blocks when it slides up and down to increase its stability.

Also, further includes a tension spring, one end of which is assembled on the wall surface of the vertical rod in a stretched state, the other end is connected to the pulley, so that tension is formed between the chain and the belt of the linkage unit.

Also, further includes two upper positioning plates individually assembled on the seat surface of the upper sliding seat, and the positioning plate further has multiple combination holes to provide the handle to be set in the combination holes at the desired position; two lower positioning plates are individually set on the seat surface of the lower sliding seat to provide the pedal to be set in the lower positioning plate; and, the two ends of the connecting plate are respectively assembled on the upper edge of the upper and lower positioning plates.

Also, further includes at least one spring, the lower end of the spring is assembled on the wall surface of the vertical rod and the upper end is connected to the upper positioning plate, for making the spring to be stretched when the upper sliding seat slides upwards, thereby providing energy for the upper sliding seat to return.

Also, wherein the adjusting device of the damping unit further includes a nut, a bolt, a protective cover, and an adjusting knob; Wherein the nut is fixed at the center of the top surface of the fixing seat, the thread of the bolt corresponds to the nut and set through the nut; the protective cover is locked on the wall surface of the rear side of the vertical rod, there is a through hole on the top face to allow the head of the bolt to pass through and connect with the adjusting knob, for making the adjusting knob rotated to drive the bolt, then the nut will drive the fixing seat to move laterally.

Also, wherein the damping unit further includes two guiding sleeves arranged on the inner edge of the protective cover and are provided with a guiding groove for containing the base body of the fixing base and guides the magnet pieces to move therebetween, thereby improving the stability of the lateral displacement of the fixing base.

Also, wherein the damping unit further includes a compression spring, which is sleeved on the outer edge of the bolt and the upper end of the nut in a compressed state, then the compression force of the compression spring can eliminate the gap between the bolt and the thread of the nut, thereby improving the effect of linear displacement of the fixing seat.

With the feature disclosed above, the resistance device capable linearly adjusting training load includes below benefits:

1. The linkage unit of the present invention has a connecting unit connect two end of the chain and the belt and further locked on the connecting plate for making the two sliding units have a linkage; since the linkage unit can operate the sliding unit on both side through the linkage of the chain and belt, further making the connecting plates drive the handle and the pedal to slide up and down relative to each other in the two vertical rods; therefore, the invention has the benefit of simple structure and low cost.

2. The damping units of the present invention, having multiple powerful magnet pieces assembled on both sides of the concave part of a U-shaped fixing seat, and the magnet pieces of the two adjacent ones and the opposite ones have different magnetic poles, then the multiple powerful magnet pieces generate magnetic circuit; a metal sheet which is diamagnetic is assembled on the connecting plate and penetrates between the concave part of the fixing seat for cutting the magnetic circuit generated by the multiple powerful magnet pieces to form damping; Since there is no contact between the magnet piece and the diamagnetic metal sheet, the metal sheet will form a damping through the magnet piece, but there will be no contact wear. Therefore, the present invention has the benefits of not easy to wear and long service life.

3. The fixing seat of the damping unit of the present invention is pivoted on the wall of the track of an adjusting device, and the operation of the adjusting device, will make the fixing seat be displaced laterally, so that the metal sheet and the strong magnet pieces will interact to each other and cut the magnetic circuit, thereby generating damping; since displacement of the fixing seat makes the area of the cutting magnetic circuit have linearly changed, thereby causing the damping to change also linearly, so operating the damping unit will change the magnetic resistance to further achieve the effect of linearly adjusting the training load.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. lA is a schematic diagram illustrating the damping unit of the rock climbing machine according to the prior art;

FIG. 1B is another schematic diagram illustrating the damping unit of the rock climbing machine according to the prior art;

FIG. 2 is an assembled perspective view of the present invention;

FIG. 3 is an assembled side view of the present invention;

FIG. 4 is an assembled front view of the present invention;

FIGS. 5A-5D are the schematic diagrams illustrating the combination structure of the vertical rods;

FIG. 6 is an assembled front view of the linkage unit;

FIGS. 7A-7B are the exploded perspective views of the linkage unit;

FIG. 8 is an assembled front view of the damping unit;

FIG. 9 is an exploded perspective view of the damping unit;

FIG. 10 is an assembled perspective view of the damping unit;

FIG. 11 is a schematic diagram showing the arrangement of the magnet piece of the damping unit;

FIGS. 12A-12B are schematic diagrams showing the operating status of the damping unit;

FIG. 13 is a schematic diagram showing the operating of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

First, referring to FIG. 2-4, the resistance device capable linearly adjusting training load 100, comprising: a rack unit 10, two sliding units 20, a linkage unit 30, and two damping units 40; wherein, the rack unit 10 having a T-shape base frame 11, a support frame 12 formed by round iron pipe, and two vertical rods 13 formed of hollow iron pipe, a positioning slot 14 locks the two vertical rods 13 with the base frame 11, and the support frame 12 supports the back sides of the two vertical rods 13 so that they are parallel and slightly inclined and stand on the base frame 11, the upper and lower sides of the two vertical rods 13 are further provided with grooves 131, so that the components of the sliding unit 20 can pass through the outer edge of the vertical rods 13 to slide; the present invention also includes a grip 15, which is made of round iron pipes and is installed on both sides of the two vertical rods 13 so that the user can support and balance his body. Moreover, the grip 15 adopts a symmetrical configuration, which also beautify the invention.

The sliding units 20 as FIGS. 5A-5D showing, having a linear rail 21. In the present invention, the linear rail 21 is divided into upper and lower sections, and the linear rail 21 is fixed to the wall surface of the inner edge of the vertical rod 13 with bolts and nuts, an upper sliding seat 22 and a lower sliding seat 23 are respectively set on the upper and lower section of the line rails 21, an upper positioning plate 27A is set on the seat surface of the upper sliding seat 22 with screws, and the upper positioning plate 27A is further provided with multiple combination holes 271 to provide the handle 25 to be set in the combination hole 271 at the desired position according to the length of the user's limb; the lower positioning plate 27B is set on the seat surface of the sliding seat 23 to provide the pedal 26 to be set on the lower positioning plate 27B; In addition, the two ends of a connecting plate 24 are respectively assembled on the upper edge of the upper and lower positioning plates 27A/27B, and the aforementioned handle 25 and pedal 26 penetrate from the groove 131 of the upper and lower sides of the vertical rod 13 to the outer edge of the vertical rod 13, so the upper and lower sliding seats 22/23 can be placed on the linear rail 21 together with the connecting plate 24 to drive the handle 25 and the pedal 26 to slide up and down; Secondly, in the present invention, at least a spring 28 is installed in a vertical rod 13, and its lower end is assembled on the wall surface of the vertical rod 13 and its upper end is connected to the positioning plate 27 to make the spring 28 enable stretched when the upper sliding seat 22 sliding upwards, so as to provide the kinetic energy for the return of the upper sliding seat 22; furthermore, the present invention further includes multiple guiding blocks 29, which are fixed on the inner edge of the vertical rod 13, and are designed with a guiding groove 291 for the connecting plate 24 to pass through, so that the connecting plate 24 can be guided an increase its stability when it slides up and down.

The linkage unit 30, as shown in FIGS. 6-7B, has a sprocket 31 and a pulley 32, which are separated up and down and assembled between the upper notch 132 and the lower notch 133 of the vertical rod 13, and the sprocket 31 is screwed to the wall surface of the vertical rod 13 adjacent to the upper notch 132 through a combination plate 33, the pulley 32 is set in the lower notch 133, and using the stretched state of a tension spring to set one end on the wall surface of the vertical rod 13, and the other end is connected to the pulley 32; a chain 35 and a belt 36 are respectively surround the sprocket 31 and the pulley 32, and each of the is using a combination unit 37 connects its two end, the combination unit 37 is further screwed to the connecting plate 24 of the two sliding units 20, so when the connected chain 35 and the belt 36 rotate, will make the two sides of the connecting plate 24 has up and down relative sliding in the vertical rod 13. Moreover, in the present invention, the tension spring 34 is used to form tension between the connected chain 35 and the belt 36, so the rotation movement with the tension will further improve the smoothness of the upper and lower sliding of the connecting plates 24 on both sides.

The damping unit 40, as FIGS. 8-11 showing, each has multiple powerful magnet pieces 41, which are arranged on both sides of the concave part 421 of a U-shaped fixing seat 42, and a nut 43 is fixed at the center of the top surface of the fixing seat 42, and a bolt 44 is set through the nut 43; a protective cover 45 is fixed on the back wall surface of the vertical rod 13 with screws to protect the related components of the damping unit 40, a through hole 451 on the top surface allows the head of the bolt 44 to pass through the outer edge of the protective cover 45 and is connected to an adjusting knob 46, then the adjusting knob 46 is rotated to drive the bolt 44, because the bolt 44 rotates in its original place, the nut 43 will move relative to the bolt 44, and further drive the fixing seat 42 to move; the present invention further includes two guide sleeves 47 and a compression spring 48, the guide sleeve 47 is fixed on the inner edge of the protective cover 45, the guide sleeve 47 has a guiding groove 471 to accommodate the seat body on both sides of the concave part 421 of the fixing seat 42 and guide the magnet piece 41 to move therebetween to improve the stability of the lateral displacement of the fixing seat 42; the compression spring 48 is sleeved on the outer edge of the bolt 44 and the upper end of the nut 43 in a compressed state, the compression force can eliminate the backlash of the screw, and then make the fixing seat 42 to have linear displacement; a metal sheet 49, with diamagnetic, in the present invention, the metal sheet 49 is made of copper or aluminum material, which is set on the connecting plate 24, and penetrates the concave part 421 of the fixing seat 42; the strong magnet pieces 41 assembled on the two sides of the concave part 421 of the fixing seat 42, its poles of two adjacent ones and the poles of the two opposing ones are different, so the magnetic poles of the magnet pieces 41 set on the same side are arranged in the form of N, S, N, S, and the magnet pieces 41 on different sides are arranged in the form of N<->S, N<->S, as shown in FIG. 11, so the magnet pieces 41 on both sides of the concave part 421 will generate a strong magnetic circuit, and the diamagnetic metal sheet 49 which set through the concave part 421 of the fixing seat 42 will form a damping by cutting the strong magnetic circuit, and the application of the damping can form a training load of the resistance device; When the user rotates the adjusting knob 46 in the forward and reverse directions, the fixing seat 42 can be moved to the reset position, then the range of the metal sheet 49 occupied of interaction with the magnet pieces 41 will change, so the displacement of the fixing seat 42 will change the area of the magnetic circuit that the metal sheet 49 cut, thereby changing the damping; as shown in FIG. 12A, it is the initial state of the damping unit 40, the fixing seat 42 has not moved yet, and the area of the metal sheet 49 to cut the magnetic circuit is relatively small. Therefore, the damping formed is relatively small; as shown in FIG. 12B, the adjusting knob 46 is rotated forward to drive the bolt 44, and the fixing seat 42 is driven by the nut 43 to displace the magnet piece 41, for making the area of the magnetic circuit that the metal pieces 49 cut increase, so greater damping will be formed.

FIG. 13 shows the state of use of the present invention; The user holds the handle 25 with both hands, and both feet step on the pedal 26 to move up and down in turn to simulate rock climbing or mountain climbing, then the linkage unit 30 will drive the connecting plate 24 of the two sliding units 20 to drive the handle 25 and the pedals 26 on both sides to have up and down relative sliding in the two vertical rods 13; also, the user can use the damping unit 40 to achieve desired training load by rotating the adjusting knob 46 in the forward and reverse directions, then the fixing seat 42 will be displaced laterally, since the connecting plate 24 drives the diamagnetic metal piece 49 to cut back and forth between the magnetic circuits generated by the strong magnet piece 41, at the same time, the displacement of the fixing seat 42 causes the area of the cutting magnetic circuit to change linearly, and the change of the damping also changed linearly. Therefore, operating the damping unit 40 will change the magnetic resistance and further achieve the effect of linearly adjusting the training load.

Since the linkage unit 30 of the present invention is connected with the chain 35 and the belt 36 at two ends by a combination member 37, and they are respectively locked on the connecting plate 24 making the two sliding units 20 have a linkage effect ; Since the linkage unit 30 is linked to the chain 35 and the belt 36, the sliding units 20 on both sides can be easily operated, so that the connecting plate 24 drives the handle 25 and pedals 26 on both sides, and respectively slide up and down relatively in the two vertical rods 13; therefore, the present invention has the benefit of simple mechanism and low cost. Secondly, the damping unit 40 of the present invention is composed of multiple powerful magnet pieces 41 which are arranged on both sides of a U-shaped fixing base 42 and make the magnet pieces 41 that adjacent to each other and opposite to each other to have different pole, then the multiple magnet pieces 41 will generate a strong magnetic circuit; a diamagnetic metal sheet 49 is arranged on the connecting plate 24 of the sliding unit 20 and set through the concave part 421 of the fixing seat 42 to cut the magnetic circuit to form damping; since the magnet piece 41 and the diamagnetic metal sheet 49 are not in contact, when the metal sheet 49 passes through the magnet piece 41 will form damping, but no contact wear will occur, therefore, the present invention has the benefits of making the components not easy to wear and have a long service life. Furthermore, the fixing seat 42 of the damping unit 40 is pivoted on the wall of the track by an adjusting device. When the adjusting device is operated, the fixing seat 42 will be displaced laterally, causing the metal sheet 49 to interact with the strong magnet piece 41 to cut the magnetic circuit, and then generate damping; because the displacement of the fixing seat 42 causes the area of the cutting magnetic circuit to change linearly, and the change of the damping also changed linearly. Therefore, operating the damping unit 40 will change the magnetic resistance and further achieve the effect of linearly adjusting the training load.

Although particular embodiments of the invention have been described in detail for purposes of illustration, various modifications and enhancements may be made without departing from the spirit and scope of the invention. Accordingly, the invention is not limited except as by the appended claims. 

What is claimed is:
 1. A resistance device capable linearly adjusting training load, comprising: a rack unit having a base frame, a support frame, and two vertical rods, the vertical rods are individually a hollow tube, stand parallelly on the base frame, and are supported by the support frame; two sliding units, each having a linear rail, fixed on the inner edge of the vertical rods, an upper sliding seat and a lower sliding seat arranged on the two ends of a connecting plate, and are placed on the linear rail and making it to be slidable up and down, a handle and a pedal are assembled on the upper and lower seats respectively; a linkage unit, which has a sprocket and a pulley, arranged separately up and down and between the two vertical rods, a chain and a belt are respectively arranged around the sprocket and the pulley, and the two end of each of them are connected by a connecting unit and further locked on the connecting plate of the two sliding units, so that the components of the two sliding units can slide up and down relative to each other; and two damping units, having multiple powerful magnet pieces assembled on both sides of the concave part of a U-shaped fixing seat, and the magnet pieces of the two adjacent ones and the opposite ones have different magnetic poles, then the fixing seat is pivoted on the surface of the vertical rod by an adjusting device, a metal sheet which is diamagnetic, is assembled on the connecting plate and penetrates between the concave part of the fixing seat for cutting the magnetic circuit generated by the multiple powerful magnet pieces to form damping, so operating the adjusting device can make the fixing seat laterally displaced to change the magnetic circuit area cut by the metal sheet, thereby changing the damping.
 2. The resistance device capable linearly adjusting training load as claimed in claim 1, wherein the metal sheet is made of copper or aluminum material.
 3. The resistance device capable linearly adjusting training load as claimed in claim 1, wherein the inner edge of the vertical rod has multiple guiding blocks, which are provided with guiding grooves to let the connecting plate set through, and make the connecting plate be guided by the guiding blocks when sliding up and down to increase its stability.
 4. The resistance device capable linearly adjusting training load as claimed in claim 1, further includes a tension spring, one end of which is assembled on the wall surface of the vertical rod in a stretched state, the other end is connected to the pulley, so a tension is formed between the chain and the belt of the linkage unit.
 5. The resistance device capable linearly adjusting training load as claimed in claim 1, further includes two upper positioning plates individually assembled on the seat surface of the upper sliding seat, and the positioning plate further has multiple combination holes to let the handle to be set in the combination holes at the desired position; two lower positioning plates are individually set on the seat surface of the lower sliding seat to let the pedal to be set in the lower positioning plate; and the two ends of the connecting plate are respectively assembled on the upper edge of the upper and lower positioning plates.
 6. The resistance device capable linearly adjusting training load as claimed in claim 5, further includes at least a spring, the lower end of the spring is assembled on the wall surface of the vertical rod and the upper end is connected to the upper positioning plate, for making the spring to be stretched when the upper sliding seat slides upwards, thereby providing energy for the upper sliding seat to return.
 7. The resistance device capable linearly adjusting training load as claimed on claim 1, wherein the adjusting device of the damping unit further includes a nut, a bolt, a protective cover, and an adjusting knob; Wherein the nut is fixed at the center of the top surface of the fixing seat, the thread of the bolt corresponds to the nut and set through the nut; the protective cover is locked on the wall surface of the rear side of the vertical rod, there is a through hole on the top face to allow the head of the bolt to pass through and connect with the adjusting knob, for making the adjusting knob rotated to drive the bolt, then the nut will drive the fixing seat to displace laterally.
 8. The resistance device capable linearly adjusting training load as claimed in claim 7, wherein the damping unit further includes two guiding sleeves arranged on the inner edge of the protective cover and are provided with a guiding groove for containing the base body of the fixing base and guides the magnet pieces to move therebetween, thereby improving the stability of the lateral displacement of the fixing base.
 9. The resistance device capable linearly adjusting training load as claimed in claim 7, wherein the damping unit further includes a compression spring, which is sleeved on the outer edge of the bolt and the upper end of the nut in a compressed state, then the compression force of the compression spring can eliminate the gap between the bolt and the thread of the nut, thereby improving the effect of linear displacement of the fixing seat. 